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Simpson Cleaning

Simpson Water Blaster 4200 PSI Gas Pressure Washer, 4.0 GPM, Honda GX390

  • Based on 23 reviews
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Availability: Only 1 left in stock, order soon!
Fulfilled by Sparks_Fly
Arrives Monday, Sep 7
Order within 15 hours and 6 minutes
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Style: Honda GX390 with CAT Pump


Features

  • SIMPSON PRESSURE WASHER FOR PROFESSIONALS: The Simpson Water Blaster gas power washer cleans decks, driveways, siding, fencing, equipment, and graffiti; The cold water machine is great for contractors; 49-State Compliant (Not for sale in California)
  • ENGINE & PUMP: Honda GX390 engine starts easily & includes low-oil shutdown; 4200 PSI 4.0 GPM CAT PUMPS triplex slow-speed pump is equipped with an external unloader and bypass hose
  • LONG HOSE REACH: The Simpson Monster series 50' dual braided high-pressure hose resists kinks and abrasion; Non-marring polyurethane jacket helps protect finished surfaces; QC pump/hose connection
  • EASY MOBILITY: 13" premium pneumatic tires roll smoothly over gravel, grass, and curbs; Balanced layout improves transport; Aircraft grade aluminum frame with powder-coated finish is easy to assemble and resists corrosion; 46" L x 26" W x 25" H; 146 lb
  • PRO PRESSURE WASHER ACCESSORIES: Five quick-connect pressure washer tips (0, 15, 25, 40, and soap nozzle) cover tasks from stripping paint to car cleaning; Professional rear-load spray gun, QC/NPT fittings, and 48" insulated spray wand included

Description

The SIMPSON Water Blaster 4200 PSI 4.0 GPM gas pressure washer is the perfect machine for professional paint preparation, facility and fleet maintenance, mining, construction, property maintenance, and more. Engineered for commercial and industrial use, it features a heavy duty aluminum frame for increased mobility. Running on a belt drive system, it’s designed to reduce heat and vibration, and lessen wear and tear over time. The ALWB60828 runs on a HONDA GX390 engine built for long, continuous runs on the toughest jobs, with a reliable CAT industrial triplex pump. It comes with a 50’ hose, an ergonomic spray gun, and 5 Quick-Connect nozzles. Kit includes engine oil and siphon tube. Designed to meet the rigorous demands of the cleaning professional, the SIMPSON Aluminum Water Blaster series frame is crafted of 100% aircraft grade aluminum, making it lighter in weight than most steel frame pressure washer designs. Perfect for contractors who specialize in deck cleaning, wood restoration, paint preparation, graffiti removal and all other professional cleaning services. The SIMPSON Aluminum Water Blaster series designed for optimum performance in the harshest environments. Engine - 3 Year Limited Commercial Warranty | Pump - 5 Year Limited Warranty | Frame - 10 Year Limited Warranty

Brand: Simpson Cleaning


Power Source: Gasoline


Color: Black


Item Weight: 161 pounds


Hose Length: 50 feet


Specification Met: CE, CETA, CSA


Product Dimensions: 48"L x 27"W x 25"H


Tank Volume: 1.6 gallons


Maximum Flow Rate: 4 gpm


Global Trade Identification Number: 32


Item Weight: 161 pounds


Hose Length: 50 feet


Item Dimensions L x W x H: 48"L x 27"W x 25"H


Tank Volume: 1.6 gallons


Power Source: Gasoline


Maximum Flow Rate: 4 gpm


Maximum Pressure: 4200 psi


Specification Met: CE, CETA, CSA


Color: Black


Brand Name: Simpson Cleaning


Model Number: ALWB60828


Global Trade Identification Number: 32


UPC: 879399002632


Manufacturer Warranty Description: Warranty Details Engine - 3 Year Limited Commercial Warranty | Pump - 5 Year Limited Warranty | Frame - 1 Year Limited Warranty


Included Components: Pressure Washer


Item Type Name: Gas Pressure Washer, 4.0 GPM Commercial Power Washer, Honda Engine, 50' Hose, Aluminum Water Blaster Series, 49-State Compliant (ALWB60828)


Manufacturer: Simpson


Manufacturer Part Number: ALWB60828


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Amazing pressure washer
Style: Honda GX390 with CAT Pump
This is a professional pressure washer and I would not recommend it for casual home use. But for professional jobs where it’s running all day long it is amazing. East start up and the Honda engine just purrs and never seems to struggle one bit. I did add an hour meter to keep track of my oil change intervals and changing the oil is a breeze. Extremely happy with my purchase. ... show more
Reviewed in the United States on December 8, 2021 by John Leach
    • Best all around
Style: Honda GX390 with CAT Pump
Honda GX 390 motor Cat pump Belt drive This unit is the trifecta. It will not disappoint. Spend the money as this will last you for quite a long time.
Reviewed in the United States on December 11, 2019 by Brian H
    • Awesome
Style: Honda GX390 with CAT Pump
I started my own little pressure washing business two and a half years ago. This is the model I wanted but decided to go with the direct drive version because it was $600 less. I wish now that I would have just ponied up the money for the belt driven version. The number one reason is that this model eliminates the variable of the customer’s water pressure from the equation. I attached it to a 26 gallon tank from Northern Tool that can be purchased here on Amazon and it works famously. The belt drive pump sucks the water right out of the tank. I connected the 3/4” outlet on the bottom of the tank to the inlet of the machine using suction resistant poly hose and a Hudson float valve in the top of the tank to control water flow. I haven’t performed any experiments yet but I know I’m putting out more water. Recently, I was doing a driveway with my older, direct drive, unit and the customer told me that, according to his digital water meter, I was only drawing 3.3 gallons per minute. A bucket fill test showed he was putting out close to 6 gallons a minutes from his hose. I was using a 20” surface machine and the job took forever. With this unit, I’m getting the whole 4.0 gallons. If those numbers are similar to other customers, I’m putting out roughly 21% more water. ... show more
Reviewed in the United States on May 26, 2022 by Charlie Cunningham
    • Pressure Washer
Style: Honda GX390 with CAT Pump
Very nice.
Reviewed in the United States on May 31, 2021 by Rating
    • If you want it undamaged don't buy from Amazon
Style: Honda GX390 with CAT Pump
Unit arrived in a large box with no pallet. As it came off the truck parts were falling out of the box that was torn. . The unit is very heavy and was in a plain carboard box. Free shipping, you get what you pay for.
Reviewed in the United States on November 16, 2021 by Chuck
    • Runs good but was damaged in shipment
Style: Honda GX390 with CAT Pump
Everything was good except the machine was damaged .
Reviewed in the United States on July 30, 2020 by Brian Young
    • These Simpson Powers Washers last forever - almost.
Style: Honda GX390 with CAT Pump
This Water Blaster replaces our Water Shotgun that lasted since 1991 in an unforgiving contractor use environment. Simpson is the standard by which all others should be judged.
Reviewed in the United States on May 31, 2019 by KC
    • missing parts
Style: Honda GX390 with CAT Pump
Missing the actual spray handle
Reviewed in the United States on August 15, 2025 by Amazon Customer

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